mandag 10. mars 2014

WoGE #429

Luis had an ineresting WoGE #428, one I am sure everyone has seen photos of. Yet it proved deceptively hard to track down, even when starting on the right continent!

But enough outliers and inselbergs. Here's a hole.

Where is it, why is there a hole now, and what is the geology of the area?

Schott rule applies, due to the historig/geologic/something else significance of this hole. Original posting time 3/10/2014 10:33 UTC/GMT +1 hour.

I have deliberately zoomed in rather close to make it a little less easy.

For any new players to Where on (Google) Earth, simply post a comment with latitude and longitude and write something about the (geologic/geographic/hydrographic) feature in the picture. If you win, you get to host the next one. Previous WoGEs are collected by Felix on his blog and a KML file.

If you don't know what the Schott Rule is, it may still apply to you.

5 kommentarer:

  1. Ole, do I interpret your WOGE correct: you do apply the Schott Rule with posting time 3/10/2014 10:33 UTC/GMT +1 hour ?

  2. Due to the history of this place, I do invoke a Schott rule. I will amend the original post to include that.

  3. 45.2941°, 7.5113° Miniera di amianto di Poggio San Vittore, Balangero/Corio, Valli di Lanzo, Massiccio di Lanzo, Torino, Piemonte, Italia

    Big abandoned (1990) asbestos mine on the municipal territories of Balangero and Corio, 30 km N of Turin, in a satellite body of the Lanzo ultramafic massif. Mineral collecting is now forbidden.

    The Balangero serpentinite body (~7 km2) is a satellite of the Lanzo ultramafic massif also in tectonic contact with the Sesia-Lanzo Zone and at present level of exposure is separated from the Lanzo Massif by a band of Quaternary terrains several kilometres wide. It manly consists of antigorite serpentinite with relics of the original mantle peridotite. In the Balangero serpentinite body operated the famous Poggio San Vittore asbestos mine, which is the type locality for balangeroite. []

  4. You got it, Felix. A look at Italian Wikipedia leads to a long list of articles about asbestosis, which has unusually high occurrence in this area. And to "Eternite", the "fabulous" building material I remember from my childhood. Most of the asbestos in that came from this mine.

    I think that's the last ultramafite body from me for a while. Next one will have a different, but related theme. :D

  5. is ready for hunting.